Sheet-metal roof



R. G. SYKES. Sheet-Metal Roof.

No. 225,733. Patented Mar. 23, 1880.

INVENTOR N. PETERS, FHOTO-LITHCGRAPHER. WASHINGTON, D C.

UNITED STATES PATENT OFFICE.

RAYMOND G. SYKES, OF NILES, OHIO.

SHEET-METAL ROOF.

SPECIFICATION forming part'of Letters Patent No. 225,733, dated March 23, 1880. Application filed December 26, 1877.

To all whom it may concern:

Be it known that I, RAYMOND G. SYKEs, of Niles, in the county of Trumbull and State of Ohio, have invented certain new and useful Improvements in Sheet-Metal Roofing; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference beinghad to the accompanying drawings,which form part of this specification.

My invention relates to improvements in sheet-metal roofing, and more particularly to the method of fastening the different sheets together that constitute the roof.

My invention consists in a sheet-metal key passed through a slit made through the cap and upturned flanges of the joint, which key is afterward bent down against the sides of the cap, as will be hereinafter set forth and claimed.

In the drawings, Figure 1 is a plan view, and Fig. 2 a sectional view, of a device embodying my invention, and representing the key as it appears before it is bent down. Fig.3 represents the same as it appears with the key bent down and the joint complete.

A A are two adjacent sheets of metal roofing with their edges upturned in the usual manner. B is the usual cap, of sheet metal, which sets down over the joint. O are the slots or slits through which the sheetmetal keys are inserted. D is one of the sheet-metal keys which forms the tie between the upturned edges of the sheets A and the cap B.

The operation of this device is as follows: The cap B having been introduced upon the upturned edges of the sheets A, the slit 0 is formed by a suitable tool, which is forced through the four, or more or less, thicknesses of metal that may constitute the joint. The sheet-metal key is then introduced, and its two ends are bent down flush with the outer surfaces of the cap, as shown in Fig. 3. It is immaterial whether this key be inserted horizontally-that is, so that its plane shall be parallel with the roof-or whether it be inserted vertically, or so that its edge shall be presented toward the roof. So, also, it is immaterial what shape this key D may have. I prefer, however, to make it slightly wedge shape, so that it maybe driven into the slit and thus till the slit full to its edges. The slit should be only of sufficient size to admit the thickness of the key, in order to prevent liability of leakage at this point. After the key has been bent down flush with the surfaces of the cap the joint will be found to be very tight and close, and when coated with paint not liable to leak. This key may be folded down flat against the surfaces of the cap B, or, if desired, it may be folded so as entirely to cover the slit through which it is passed; but I prefer, generally, simply to fold it down against the sides, as that construction furnishes a close joint and one readily and quickly made. These strips D may be simply strips of tin, or they may be strips of that kind of metal of which the roof is composed, or of any other suitable metal.

This method of securing the upturned edges to the cap is not limited to any particular kind of joint, but may be employed with any of the different kinds of roof-joints where it is de sired'to secure the different plies together.

I am aware that the plies or folds of a sheet metal roof have been secured together by eyelets, and hence I disclaim such construction; but

What I claim is-- The com bination, with the sheetmetal plies, provided with the slit 0, of a wedge-shaped sheet-metal key, D, passed through the said slit and having its end bent flush with the surfaces, substantially as and for the purposes described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

RAYMOND G. SYKES.

Witnesses:

WELLS W. Lneen'rr, W. E. DONNELLY. 

